| Kim Phillips | 8e8ec59 | 2011-03-13 16:54:26 +0800 | [diff] [blame] | 1 | config CRYPTO_DEV_FSL_CAAM |
| 2 | tristate "Freescale CAAM-Multicore driver backend" |
| 3 | depends on FSL_SOC |
| 4 | help |
| 5 | Enables the driver module for Freescale's Cryptographic Accelerator |
| 6 | and Assurance Module (CAAM), also known as the SEC version 4 (SEC4). |
| 7 | This module adds a job ring operation interface, and configures h/w |
| 8 | to operate as a DPAA component automatically, depending |
| 9 | on h/w feature availability. |
| 10 | |
| 11 | To compile this driver as a module, choose M here: the module |
| 12 | will be called caam. |
| 13 | |
| 14 | config CRYPTO_DEV_FSL_CAAM_RINGSIZE |
| 15 | int "Job Ring size" |
| 16 | depends on CRYPTO_DEV_FSL_CAAM |
| 17 | range 2 9 |
| 18 | default "9" |
| 19 | help |
| 20 | Select size of Job Rings as a power of 2, within the |
| 21 | range 2-9 (ring size 4-512). |
| 22 | Examples: |
| 23 | 2 => 4 |
| 24 | 3 => 8 |
| 25 | 4 => 16 |
| 26 | 5 => 32 |
| 27 | 6 => 64 |
| 28 | 7 => 128 |
| 29 | 8 => 256 |
| 30 | 9 => 512 |
| 31 | |
| 32 | config CRYPTO_DEV_FSL_CAAM_INTC |
| 33 | bool "Job Ring interrupt coalescing" |
| 34 | depends on CRYPTO_DEV_FSL_CAAM |
| 35 | default y |
| 36 | help |
| 37 | Enable the Job Ring's interrupt coalescing feature. |
| 38 | |
| 39 | config CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD |
| 40 | int "Job Ring interrupt coalescing count threshold" |
| 41 | depends on CRYPTO_DEV_FSL_CAAM_INTC |
| 42 | range 1 255 |
| 43 | default 255 |
| 44 | help |
| 45 | Select number of descriptor completions to queue before |
| 46 | raising an interrupt, in the range 1-255. Note that a selection |
| 47 | of 1 functionally defeats the coalescing feature, and a selection |
| 48 | equal or greater than the job ring size will force timeouts. |
| 49 | |
| 50 | config CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD |
| 51 | int "Job Ring interrupt coalescing timer threshold" |
| 52 | depends on CRYPTO_DEV_FSL_CAAM_INTC |
| 53 | range 1 65535 |
| 54 | default 2048 |
| 55 | help |
| 56 | Select number of bus clocks/64 to timeout in the case that one or |
| 57 | more descriptor completions are queued without reaching the count |
| 58 | threshold. Range is 1-65535. |
| 59 | |
| 60 | config CRYPTO_DEV_FSL_CAAM_CRYPTO_API |
| 61 | tristate "Register algorithm implementations with the Crypto API" |
| 62 | depends on CRYPTO_DEV_FSL_CAAM |
| 63 | default y |
| 64 | select CRYPTO_ALGAPI |
| 65 | select CRYPTO_AUTHENC |
| 66 | help |
| 67 | Selecting this will offload crypto for users of the |
| 68 | scatterlist crypto API (such as the linux native IPSec |
| 69 | stack) to the SEC4 via job ring. |
| 70 | |
| 71 | To compile this as a module, choose M here: the module |
| 72 | will be called caamalg. |